I am rebuilding a 4.5 hp tecumseh tvs115. I have nearly completed the
project, but ran into a strange problem. There is no spark going to
the plug. I removed the brake mechanism, and tried it again with the
ground wire connected to the magneto. I got a spark. Thinking the
problem was fixed, I replaced the brake and tried again. No Spark. I
seem to only get a spark when the brake mechanism is outside of the
engine. There is a small amount of copper showing by the connection to
the brake, but I even tried to cover the exposure with electrical tape.